Process for producing fluorescent material
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United States of America Patent
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Sep 1, 2020
Grant Date -
Jan 18, 2018
app pub date -
Feb 17, 2016
filing date -
Feb 18, 2015
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Abstract
The present invention relates to a process for producing a composite-fluoride fluorescent material represented by the general formula A2MF6:Mn4+ (wherein A is at least one alkali metal element including K; M is one or more metallic elements including at least Si or Ge and selected from among Si, Ge, Sn, Ti, Zr, and Hf; F is fluorine; and Mn is manganese). With the production process, it is possible to obtain a fluorescent material which is high in absorptance, internal quantum efficiency, and external quantum efficiency and has excellent optical properties.
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